Title:
METHOD OF PROCESSING GLASS BASE AND RINSE COMPOSITION FOR GLASS BASE PROCESSING
Document Type and Number:
WIPO Patent Application WO/2007/119775
Kind Code:
A1
Abstract:
A method of glass base processing which comprises a step in which a glass base is polished with an abrasive material such as cerium oxide and a step in which the glass base is rinsed while supplying thereto a rinse composition having a pH of 7-12 which comprises (1) an aqueous solution of a water-soluble magnesium compound, (2) an aqueous solution of a water-soluble magnesium compound and of at least one member selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, and alkali metal hydrogen carbonates, or (3) a suspension containing colloidal particles and obtained by reacting in water a water-soluble magnesium compound with at least one member selected from the group consisting of alkali metal hydroxides, alkali metal carbonates, and alkali metal hydrogen carbonates. By the glass base processing method, a glass base extremely reduced in surface roughness can be obtained.
Inventors:
MIZUKAMI HIROSHI (JP)
Application Number:
PCT/JP2007/058050
Publication Date:
October 25, 2007
Filing Date:
April 12, 2007
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
MIZUKAMI HIROSHI (JP)
MIZUKAMI HIROSHI (JP)
International Classes:
C03C23/00; B08B3/08; B24B37/00; C03C19/00; G11B5/84
Foreign References:
| JPH03146585A | 1991-06-21 | |||
| JPH11209745A | 1999-08-03 | |||
| JP2003226553A | 2003-08-12 | |||
| JP2000302482A | 2000-10-31 | |||
| JP2002150547A | 2002-05-24 | |||
| JP2004086930A | 2004-03-18 |
Attorney, Agent or Firm:
SHIGA, Masatake et al. (YaesuChuo-ku, Tokyo, JP)
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